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Digital Preservation Metadata
and Improvements to PREMIS in
Version 3.0
Angela Dappert
University of Portsmouth
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
Digital preservation metadata
Why is it needed and what does it look like?
PREMIS
What is it?
Data model
How to use it
From V2 to V3
27 May 2015 2
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
PREMIS
What is it?
Data model
How to use it
From V2 to V3
27 May 2015 3
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
What is digital preservation metadata?
Digital preservation metadata =
Metadata to ensure long-term accessibility
of digital resources
Digital objects must be self-descriptive
Must be able to describe, manage and discover
independently from the systems that were used to create
them
XML (machine and human readable)
27 May 2015 4
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
DP metadata supports preservation goals
Preservation Pyramid
(from Priscilla Caplan)
27 May 2015 5
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Domain
27 May 2015 6
Born digital
Digitized
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Technology dependence
No direct access
• Not
self-descriptive
• Complex formats
Complex
environments
digital
27 May 2015 7
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Technology dependence
Metadata:
• Format information • Rendering information
• Software • Hardware • Other dependencies:
schemas, style sheets, encodings, etc.
27 May 2015 8
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Complex structures
Metadata
• Physical structural relationships
• Embedded files
• File sequence
• Logical structural relationships
Abstract.html
Abstract.gif
Thumb.jpg
Content file 1
Content file 2
Content file 3
Chapter 1 Chapter 2
Title Page
Table
Of
contents
Page 1
Page 134
Page 135
Page 136
Content file 136
Content file 137
Content file 138
27 May 2015 9
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Supporting features
27 May 2015 10
Metadata:
Semantic information for the designated community
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Supporting features
27 May 2015 11
Metadata:
Semantic information for the designated community
Example uses and queries
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Context descriptions
Metadata:
Context descriptions
• Original source
• Related items (e.g. migration source)
recto
verso
recto
27 May 2015 12
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Obsolescence
-> object transformations
Pre-emptive preservation actions
Bit migration
Content migration
Replacing part of the rendering stack
Forensic transformation actions
27 May 2015 13
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Obsolescence / object transformations
Goals Metadata
Avoid rights violations
Prove authenticity
Rights information for
preservation actions
during copyright / license
period
Provenance metadata:
History of all actions
performed on the resource
History of custodianship
27 May 2015 14
Events
Dates
Changes and decisions
Agents (decision maker + tools used)
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Obsolescence / object transformations
Goals Metadata
Manage potential loss of
object characteristics
Demonstrate degree of
authenticity
Explain decisions
Significant characteristics
Lost characteristics
Business rules (policy,
strategy) guiding
preservation actions
27 May 2015 15
Documentation
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Mutability
Goals Metadata
Viability: the object is
readable
Fixity: the object is
unchanged
Data carrier metadata
Type of medium
Its preservation characteristics
Age of medium
Date of recording
Usage patterns
Checksums, message digests, hash function
Event creating them Algorithms creating them
Date/time
Originator
27 May 2015 16
Intentional or accidental change
Decay: rapid and potentially complete
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Mutability
Goals Metadata
Integrity: the object is
whole and unimpaired
Authenticity: the object is
what it purports to be
Event information for
format identification and
validation events
(= provenance)
Structural metadata
Digital signatures
Access rights
27 May 2015 17
Intentional or accidental change
Decay: rapid and potentially complete
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
Digital preservation metadata
Why is it needed and what does it look like?
Data model
How to use it
From V2 to V3
27 May 2015 18
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
The PREMIS standard
International de-facto standard for metadata
to support the preservation of digital objects and
ensure their long-term usability.
Information you need to know for preserving digital objects
Preservation Metadata: Implementation Strategies
Developed by an international team of experts.
Implemented in digital preservation projects around the
world.
Incorporated into commercial and open-source
digital preservation tools and systems.
27 May 2015 19
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
The PREMIS standard
Data Dictionary (PREMIS 2.2)
http://www.loc.gov/standards/premis/v2/premis-2-2.pdf
Version 3 will be released this summer – major release
XML schema v2.3
OWL ontology
Supporting documentation
27 May 2015 20
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Activities
The PREMIS Editorial Committee
Coordinates revisions and implementation of the standard
PREMIS Implementors' Group forum ([email protected])
Email message to [email protected]:
Text: subscribe pig <your name>
PREMIS Implementation Fair (PIF)
User group meetings (@iPres)
27 May 2015 21
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Scope
What PREMIS DD is:
Common data model for organizing/thinking about
preservation metadata
Standard for exchanging information packages between
repositories
Implementable
Technically neutral
Core metadata
27 May 2015 22
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Scope
What PREMIS DD is not:
Out-of-the-box solution
All needed metadata
Lifecycle management of objects outside repository
- increasing support for integration with outside
Rights management standard
- strong support for rights statements
27 May 2015 23
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
Digital preservation metadata
Why is it needed and what does it look like?
What is it?
How to use it
From V2 to V3
27 May 2015 24
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Entities: “things” relevant to digital preservation that are described by preservation metadata
Relationships between Entities
Properties of Entities (semantic units)
Object
Event
Agent
Rights
Intellectual Entity
Data Model in PREMIS Version 2
Representation File
Bitstream
Entity
27 May 2015 25
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Example: Object Entity semantic units
1.1 object Identifier
1.2 object Category
1.3 preservation Level
1.4 significant Properties
1.5 object Characteristics
1.6 original Name
1.7 storage
1.8 environment
1.9 signature Information
27 May 2015 26
Object
1.10 relationship
1.11 linkingEventIdentifier
1.13 linkingRightsStatementIdentifier
1.5 objectCharacteristics
1.5.1 compositionLevel
1.5.2 fixity
1.5.3 size
1.5.4 format
1.5.5 creatingApplication
1.5.6 inhibitors
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
1.5 objectCharacteristics
1.5.1 compositionLevel
1.5.2 fixity
1.5.3 size
1.5.4 format
1.5.5 creatingApplication
1.5.6 inhibitors
Sample Data Dictionary Entry
Semantic unit size Semantic components
None
Definition The size in bytes of the file or bitstream stored in the repository.
Rationale Size is useful for ensuring the correct number of bytes from storage have been retrieved and that an application has enough room to move or process files. It might also be used when billing for storage.
Data constraint Integer Object category Representation File Bitstream
Applicability Not applicable Applicable Applicable
Examples 2038927
Repeatability Not repeatable Not repeatable Obligation Optional Optional Creation/ Maintenance notes
Automatically obtained by the repository.
Usage notes Defining this semantic unit as size in bytes makes it unnecessary to record a unit of measurement. However, for the purpose of data exchange the unit of measurement should be stated or understood by both partners.
27 May 2015 27
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
Digital preservation metadata
Why is it needed and what does it look like?
What is it?
Data model
From V2 to V3
27 May 2015 28
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Tayloring PREMIS to needs
Evolving metadata
Increasing experience ensuring the longevity of digital objects
Changing future technical possibilities
Changing future legal framework
Tayloring solutions
Varying needs
Content-types
Institutional policies
Intended use
27 May 2015 29
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
From here to an implementation …
27 May 2015 30
Object
Event
Agent
Rights
Intellectual Entity
Representation File
Bitstream
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Example: Document in 3 representations
31
Representation 1 Representation 2
Intellectual Entity
2015-05-27-Presentation
<descriptive metadata>
File 2
2015-05-27-
Presentation.pdf
File 1
2015-05-27-
Presentation.pptx
Representation 3
File 3
2015-05-27-Notes.
docx
Derivation/
has source
Structural/
has sibling
Structural / includes Structural / includes Structural / includes Event
Agent
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue:
ark:/9999/h1.version1
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue: ark:/9999/h1.version2
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue::ark:/12148/cb37367035f
objectCategory: intellectual entity
relationship
relationshipType: derivation
relationshipSubType: has source
relatedObjectIdentifier
relatedObjectIdentifierType: ARK
relatedObjectIdentifierValue: ark:/9999/h1.version1
27 May 2015 32
33
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue:
ark:/9999/h1.version1
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue: ark:/9999/h1.version2
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue::ark:/12148/cb37367035f
objectCategory: intellectual entity
relationship
relationshipType: derivation
relationshipSubType: has source
relatedObjectIdentifier
relatedObjectIdentifierType: ARK
relatedObjectIdentifierValue: ark:/9999/h1.version1
relatedEventIdentifier
relatedEventIdentifierType: LocalDCMS
relatedEventIdentifierValue: E002.2 eventIdentifier
eventIdentifierType: LocalReposit
eventIdentifierValue: E002.2
eventType: migration
27 May 2015
34
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue:
ark:/9999/h1.version1
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue: ark:/9999/h1.version2
objectCategory: representation
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue::ark:/12148/cb37367035f
objectCategory: intellectual entity
relationship
relationshipType: derivation
relationshipSubType: has source
relatedObjectIdentifier
relatedObjectIdentifierType: ARK
relatedObjectIdentifierValue: ark:/9999/h1.version1
relatedEventIdentifier
relatedEventIdentifierType: LocalDCMS
relatedEventIdentifierValue: E002.2 eventIdentifier
eventIdentifierType: LocalReposit
eventIdentifierValue: E002.2
eventType: migration
27 May 2015
27 May 2015
agentIdentifier
agenIdentifierType: gentID
agentIdentifierValue: 1234
agentName: MS PowerPoint 2010
V14.0.7149.5000 (32bit)
agentType: software
linkingAgentIdentifier
linkingAgentIdentifierType: gentID
linkingAgentIdentifierValue: 1234
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
27 May 2015
Tayloring PREMIS to needs
Evolving metadata
Increasing experience ensuring the longevity of digital objects
Changing future technical possibilities
Changing future legal framework
Tayloring solutions
Varying needs
Content-types
Institutional policies
Intended use
Off-the-shelf (OS / commercial ) or custom-built
• Predefined metadata profiles
• Out-of-the-box tools
Off-the-shelf systems
• Metadata profiles and tools
Configured, extended, adapted
• Metadata profiles and tools
Custom-built systems
35
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Agenda
Digital preservation metadata
Why is it needed and what does it look like?
PREMIS
What is it?
Data model
How to use it
27 May 2015 36
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
PREMIS: From V2 to V3
Next major version of the PREMIS Data Dictionary
Released by July 2014 (hopefully )
Proof-reading phase
27 May 2015 37
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
PREMIS: From V2 to V3
Improving PREMIS based on user needs
Add preservationLevelType semantic unit
Add agentVersion semantic unit
Add “unknown” values
Add eventDetailInformation semantic unit
Add authority for controlled vocabulary
Make Intellectual Entity an Object category
Make Environments independent Objects
Add physical Objects
Update conformance statement
27 May 2015 38
minor
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Add eventDetailInformation semantic unit .
2.1 eventIdentifier
2.2 eventType
2.3 eventDateTime
2.4 eventDetail
2.5 eventOutcomeInformation
2.6 linkingAgentIdentifier
2.7 linkingObjectIdentifier
27 May 2015 45
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Add eventDetailInformation semantic unit .
2.1 eventIdentifier
2.2 eventType
2.3 eventDateTime
2.4 eventDetailInformation
2.4.1 eventDetail
2.4.2 eventDetailExtension
2.5 eventOutcomeInformation
2.6 linkingAgentIdentifier
2.7 linkingObjectIdentifier
27 May 2015 46
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
PREMIS: From V2 to V3
Improving PREMIS based on user needs
Add preservationLevelType semantic unit
Add agentVersion semantic unit
Add “unknown” values
Add eventDetailInformation semantic unit
Add authority for controlled vocabulary
Make Intellectual Entity an Object category
Make Environments independent Objects
Add physical Objects
Update conformance statement
27 May 2015 47
minor
bonus
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
eventIdentifier:
eventIdentifierType: UUID
eventIdentifierValue: 908985d3-9600-4da4-a7e7-c6e9508bf24c
eventType: validation
eventDateTime: 2014-07-03T23:18:19
eventDetailInformation:
eventDetail: program="Jhove"; version="1.5"
eventOutcomeInformation:
eventOutcome: fail
eventOutcomeDetail:
eventOutcomeDetailNote:
format="JPEG"; version="1.02"; result="Not well-formed“
capture
compression
creation
deaccession
decompression
decryption
deletion
digital signature validation
fixity check
ingestion
message digest calculation
migration
normalization
replication
validation
virus check
authority="premisEventType"
authorityURI= "http://id.loc.gov/vocabulary/preservation/eventType.html"
valueURI= "http://id.loc.gov/vocabulary/preservation/eventType/val.html
Implementation specific change:
Add authority for controlled vocabulary
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
PREMIS: From V2 to V3
Improving PREMIS based on user needs
Add preservationLevelType semantic unit
Add agentVersion semantic unit
Add “unknown” values
Add eventDetailInformation semantic unit
Add authority for controlled vocabulary
Make Intellectual Entity an Object category
Make Environments independent Objects
Add physical Objects
Update conformance statement
27 May 2015 49
major
minor
bonus
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Make Intellectual Entity an Object category
Event
Agent
Rights
Intellectual Entity
V2:
• Assumed to be
held in a
container
metadata schema
• No Intellectual
Entity semantic
units
• Exception:
identifier to
enable linking to
a description
• PREMIS Objects
link to it.
• A set of content that is considered a single intellectual unit for purposes of management
and description
• For example, a particular book, map, photograph, or database.
Object
Representation File
Bitstream
27 May 2015 50
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Make Intellectual Entity an Object category
Event
Agent
Rights
V3:
• Possibility to
describe
preservation
aspects of
intellectual entities
• Same semantic
units as
Representations
Object
Representation File
Bitstream
Intellectual Entity Representation
File Bitstream
27 May 2015 51
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Make Intellectual Entity an Object category
Relate to PREMIS Events and RightsStatements.
Support structural and derivative relationships with Objects.
Represent an aggregate, such as a collection, FRBR work, FRBR expression, fonds or series.
Capture versioning information and metadata update events at the Intellectual Entity level
Associate business requirements with them.
Significant characteristics, risk definitions, guidelines for preservation actions, etc..
27 May 2015 52
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Make Environments independent Objects
What is needed to render or use an object
Operating system
Application software
Hardware
Computing resources
A high-level data model
No detailed characteristics specific to an environment type
27 May 2015 54
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
File File 2 relationshipType: dependency
relationshipSubType: requires
Software
application
Operating
system
Hardware
architecture
Hardware
peripheral
Software
driver
Software
library
Example: Environment stack and
dependency relationships
• Modularised environment
aggregates as a network
• Re-usable and distributed
environment descriptions
• across different Objects
• across repositories and
registries
File 1
Repository
Repository
Registry 1
Registry 2
27 May 2015 55
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Data Model in PREMIS V2
27 May 2015 56
Object
(including
Environment semantic
unit container)
Event
Agent
Rights
Intellectual Entity
Environment
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Data Model in PREMIS V3
27 May 2015 57
Object Environment
Event
Agent
Rights
identifiers
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
represents =
relationshipType: structural
relationshipSubType: represents
Content Object
Intellectual Entity
hardware
Intellectual Entity
operating system
Intellectual Entity
software application
File Object
ISO image
File Object
executable file
represents represents
requires
Example:
An object and its rendering environment
requires =
relationshipType: dependency
relationshipSubType: requires
represents
Intellectual Entity
for content Object
27 May 2015 58
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1. Object to environment - specify computational context
2. environment to Object - documentation, specifications, surrogates
3. environment to environment - inclusion, dependency, derivation,other
4. environment is an Object – preserved software source code
5. Agent to Environment - role of an Agent
6. environment to Event - environment specific Events (provenance)
7. environment to RightsStatement - software license, policy
“Object”: here a traditional content Object
2
Event
Agent
Rights
5
7
6
3
1
identifiers
4 Object Environment
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Expanded relationship types for
environment Objects
Dependency
Requires, is required by
Is deployed on
Derivation
Is source of, has source
Logical
generalises,
is generalised by
Reference
Documents,
is documented in
Replacements
Supercedes,
is superceded by
Structural
Includes, is included in
Represents,
is represented as
27 May 2015 60
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Semantic units only applicable to
environment Intellectual Entities 1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship …
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue: ark:/9999/b1
objectCategory: intellectual entity
environmentFunction
environmentFunctionType: software
environmentFunctionLevel: 1
environmentFunction
environmentFunctionType: operating system
environmentFunctionLevel: 2
XP Professional, Service Pack 3
27 May 2015 62
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Semantic units only applicable to
environment Intellectual Entities 1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship …
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic
objectCategory: intellectual entity
environmentFunction
environmentFunctionType: software
environmentFunctionLevel: 1
environmentFunction
environmentFunctionType: operating system
environmentFunctionLevel: 2
environmentDesignation
environmentName: Windows XP Professional
environmentVersion: Service Pack 3
environmentDesignationNote:
maintenance deadline: 2014-04
27 May 2015 63
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Semantic units only applicable to
environment Intellectual Entities
27 May 2015 64
1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship …
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic
objectCategory: intellectual entity
environmentFunction
environmentFunctionType: software
environmentFunctionLevel: 1
environmentFunction
environmentFunctionType: operating system
environmentFunctionLevel: 2
environmentDesignation
environmentName: Windows XP Professional
environmentVersion: Service Pack 3
environmentRegistry
environmentRegistryName: PRONOM
environmentRegistryKey: x-sfw/8
environmenttRegistryRole: identity
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Semantic units only applicable to
environment Intellectual Entities 1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship …
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic Content Object
relationshipType: dependency
relationshipSubType: requires
relatedEnvironmentPurpose: render
relatedEnvironmentCharacteristic: recommended
relatedObjectIdentifier
relatedObjectIdentifierType: PUID
relatedObjectIdentifierValue: x-sfw/8
x-sfw/8 Description of Windows XP
Professional in PRONOM
Alternative:
Link to an external registry
27 May 2015 65
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Semantic units only applicable to
environment Intellectual Entities 1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship …
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic
27 May 2015 66
27 May 2015 67
1.9 environmentFunction
environmentFunctionType
environmentFunctionLevel
1.10 environmentDesignation
environmentName
environmentVersion
environmentOrigin
environmentDesignationNote
environmentDesignationExtension
1.11 environmentRegistry
environmentRegistryName
environmentRegistryKey
environmentRegistryRole
1.12 environmentExtension
1.13 relationship
…
relatedEnvironmentPurpose
relatedEnvironmentCharacteristic
objectCategory: intellectual entity
environmentFunction
environmentFunctionType: software application
Firefox 10.0 objectCategory: intellectual entity
environmentFunction
environmentFunctionType: software application
BlueGriffon 1.6
Content Object
formatName: text/html
relationshipType: dependency
relationshipSubType: requires
relatedEnvironmentPurpose render
relatedEnvironmentCharacteristic: known to work
relationshipType: dependency
relationshipSubType : requires
relatedEnvironmentPurpose: create
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Add physical Objects
A physical Object is A content Object, such as a manuscript, or printed document
An environment Object, such as a physical hardware device.
Representation: A digital or physical Object
Either one instantiates or embodies an Intellectual Entity
Digital and non-digital Objects can be captured uniformly.
Physical Objects can relate to digital Objects and other physical Objects.
In V3 storage is applicable to Representations. For physical Representations: the physical location, e.g. a shelf location.
27 May 2015 68
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Approved Changes:
Add physical Objects
27 May 2015 69
[Physical
representation]
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue:
ark:/9999/h1.version1
objectCategory: file
format
formatDesignation
formatName: image/tiff
formatVersion: 6.0
objectIdentifier
objectIdentifierType: ARK
objectIdentifierValue::ark:/12148/cb37367035f
objectCategory: intellectual entity
relationshipType: derivation
relationshipSubType: has source
relatedObjectIdentifier
relatedObjectIdentifierType: Internal call number
relatedObjectIdentifierValue: Rés. Ye-3535
relationshipType: structural
relationshipSubType: is represented as
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
PREMIS: From V2 to V3
Improving PREMIS based on user needs
Add preservationLevelType semantic unit
Add agentVersion semantic unit
Add “unknown” values
Add eventDetailInformation semantic unit
Add authority for controlled vocabulary
Make Intellectual Entity an Object category
Make Environments independent Objects
Add physical Objects
Update conformance statement
27 May 2015 70
major
minor
bonus
clarification http://www.loc.gov/standards/premis/premis-
conformance-20150429.pdf
Angela Dappert -Digital Preservation Metadata and Improvements to PREMIS in Version 3.0
Thank you!
Resources: http://www.loc.gov/standards/premis/
PREMIS Implementors Group Forum:
27 May 2015 71